diff --git a/src/usr/diag/prdf/plat/mem/prdfMemTdCtlr_ipl.C b/src/usr/diag/prdf/plat/mem/prdfMemTdCtlr_ipl.C
index 218752149f9..5c1a5b81360 100644
--- a/src/usr/diag/prdf/plat/mem/prdfMemTdCtlr_ipl.C
+++ b/src/usr/diag/prdf/plat/mem/prdfMemTdCtlr_ipl.C
@@ -78,6 +78,9 @@ uint32_t MemTdCtlr<T>::defaultStep( STEP_CODE_DATA_STRUCT & io_sc )
     {
         if ( nextRank <= iv_stoppedRank ) // The command made it to the end.
         {
+            PRDF_TRAC( PRDF_FUNC "The TD command made it to the end of "
+                       "memory on chip: 0x%08x", iv_chip->getHuid() );
+
             // Clear all of the counters and maintenance ECC attentions. This
             // must be done before telling MDIA the command is done. Otherwise,
             // we may run into a race condition where MDIA may start the next
@@ -102,13 +105,20 @@ uint32_t MemTdCtlr<T>::defaultStep( STEP_CODE_DATA_STRUCT & io_sc )
         }
         else // There is memory left to test.
         {
+            PRDF_TRAC( PRDF_FUNC "There is still memory left to test. "
+                       "Calling startSfRead<T>(0x%08x, m%ds%d)",
+                       nextRank.getChip()->getHuid(),
+                       nextRank.getRank().getMaster(),
+                       nextRank.getRank().getSlave() );
+
             // Start a super fast command to the end of memory.
             o_rc = startSfRead<T>( nextRank.getChip(), nextRank.getRank() );
             if ( SUCCESS != o_rc )
             {
-                PRDF_ERR( PRDF_FUNC "startSfRead<T>(0x%08x,%d) failed",
+                PRDF_ERR( PRDF_FUNC "startSfRead<T>(0x%08x,m%ds%d) failed",
                           nextRank.getChip()->getHuid(),
-                          nextRank.getRank().getMaster() );
+                          nextRank.getRank().getMaster(),
+                          nextRank.getRank().getSlave() );
                 break;
             }
         }
diff --git a/src/usr/diag/prdf/plat/mem/prdfMemTdCtlr_rt.C b/src/usr/diag/prdf/plat/mem/prdfMemTdCtlr_rt.C
index 865078014c3..6ace545152d 100644
--- a/src/usr/diag/prdf/plat/mem/prdfMemTdCtlr_rt.C
+++ b/src/usr/diag/prdf/plat/mem/prdfMemTdCtlr_rt.C
@@ -132,13 +132,20 @@ uint32_t MemTdCtlr<T>::defaultStep( STEP_CODE_DATA_STRUCT & io_sc )
 
     do
     {
+        PRDF_TRAC( PRDF_FUNC "Resuming background scrub. "
+                   "Calling startBgScrub<T>(0x%08x, m%ds%d)",
+                   nextRank.getChip()->getHuid(),
+                   nextRank.getRank().getMaster(),
+                   nextRank.getRank().getSlave() );
+
         // Restart background scrubbing on the next rank.
         o_rc = startBgScrub<T>( nextRank.getChip(), nextRank.getRank() );
         if ( SUCCESS != o_rc )
         {
-            PRDF_ERR( PRDF_FUNC "startBgScrub<T>(0x%08x,%d) failed",
+            PRDF_ERR( PRDF_FUNC "startBgScrub<T>(0x%08x,m%ds%d) failed",
                       nextRank.getChip()->getHuid(),
-                      nextRank.getRank().getMaster() );
+                      nextRank.getRank().getMaster(),
+                      nextRank.getRank().getSlave() );
             break;
         }
 
diff --git a/src/usr/diag/prdf/plat/mem/prdfMemTps_ipl.C b/src/usr/diag/prdf/plat/mem/prdfMemTps_ipl.C
index 59810eaace8..97f603e3765 100644
--- a/src/usr/diag/prdf/plat/mem/prdfMemTps_ipl.C
+++ b/src/usr/diag/prdf/plat/mem/prdfMemTps_ipl.C
@@ -63,6 +63,7 @@ uint32_t TpsEvent<TYPE_MCA>::nextStep( STEP_CODE_DATA_STRUCT & io_sc,
         if ( TD_PHASE_0 == iv_phase )
         {
             //start TPS phase 1
+            PRDF_TRAC( PRDF_FUNC "Starting TPS Phase 1" );
             o_rc = startTpsPhase1<TYPE_MCA>( iv_chip, iv_rank );
             if ( SUCCESS != o_rc )
             {
@@ -100,6 +101,7 @@ uint32_t TpsEvent<TYPE_MCA>::nextStep( STEP_CODE_DATA_STRUCT & io_sc,
             //if there was a UE or IUE
             if ( (eccAttns & MAINT_UE) || (eccAttns & MAINT_IUE) )
             {
+                PRDF_TRAC( PRDF_FUNC "UE Detected. Aborting this procedure." );
                 //UE
                 if ( eccAttns & MAINT_UE )
                 {
@@ -158,6 +160,7 @@ uint32_t TpsEvent<TYPE_MCA>::nextStep( STEP_CODE_DATA_STRUCT & io_sc,
                 if ( TD_PHASE_1 == iv_phase )
                 {
                     //Start TPS phase 2
+                    PRDF_TRAC( PRDF_FUNC "Starting TPS Phase 2" );
                     o_rc = startTpsPhase2<TYPE_MCA>( iv_chip, iv_rank );
                     if ( SUCCESS != o_rc )
                     {
diff --git a/src/usr/diag/prdf/plat/mem/prdfMemVcm_ipl.C b/src/usr/diag/prdf/plat/mem/prdfMemVcm_ipl.C
index 389adff8bd0..cf7aa75a4d6 100644
--- a/src/usr/diag/prdf/plat/mem/prdfMemVcm_ipl.C
+++ b/src/usr/diag/prdf/plat/mem/prdfMemVcm_ipl.C
@@ -60,6 +60,7 @@ uint32_t VcmEvent<TYPE_MCA>::nextStep( STEP_CODE_DATA_STRUCT & io_sc,
         if ( TD_PHASE_0 == iv_phase )
         {
             //start VCM phase 1
+            PRDF_TRAC( PRDF_FUNC "Starting VCM Phase 1" );
             o_rc = startVcmPhase1<TYPE_MCA>( iv_chip, iv_rank );
             if ( SUCCESS != o_rc )
             {
@@ -85,6 +86,7 @@ uint32_t VcmEvent<TYPE_MCA>::nextStep( STEP_CODE_DATA_STRUCT & io_sc,
             //if there was a UE or IUE
             if ( (eccAttns & MAINT_UE) || (eccAttns & MAINT_IUE) )
             {
+                PRDF_TRAC( PRDF_FUNC "UE Detected. Aborting this procedure." );
                 //UE
                 if ( eccAttns & MAINT_UE )
                 {
@@ -111,6 +113,7 @@ uint32_t VcmEvent<TYPE_MCA>::nextStep( STEP_CODE_DATA_STRUCT & io_sc,
             else
             {
                 //Start VCM phase 2
+                PRDF_TRAC( PRDF_FUNC "Starting VCM Phase 2" );
                 o_rc = startVcmPhase2<TYPE_MCA>( iv_chip, iv_rank );
                 if ( SUCCESS != o_rc )
                 {
@@ -168,6 +171,8 @@ uint32_t VcmEvent<TYPE_MCA>::nextStep( STEP_CODE_DATA_STRUCT & io_sc,
             //else if there was a MCE
             else if ( eccAttns & MAINT_MCE )
             {
+                PRDF_TRAC( PRDF_FUNC "Chip mark verified" );
+
                 //The chip mark is verified
                 io_sc.service_data->setSignature( iv_chip->getHuid(),
                                                   PRDFSIG_VcmVerified );
@@ -187,6 +192,8 @@ uint32_t VcmEvent<TYPE_MCA>::nextStep( STEP_CODE_DATA_STRUCT & io_sc,
             //else - verification failed
             else
             {
+                PRDF_TRAC( PRDF_FUNC "Chip mark false alarm" );
+
                 io_sc.service_data->setSignature( iv_chip->getHuid(),
                                                   PRDFSIG_VcmFalseAlarm );